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|
#!/bin/sh
############################################################
# Copyright (c) 2009-2010 by Aleksey Cheusov
#
# See LICENSE file in the distribution.
############################################################
set -e
LC_ALL=C
export LC_ALL
: ${CHECK_COMMON_SH_DIR:=@mkc_libexecdir@}
##################################################
# options
usage (){
cat <<EOF
mkc_check_funclib detects presense of function in a library
by compiling and linking a test program.
Usage: mkc_check_funclib [OPTIONS] function [libraries...]
OPTIONS:
-h display this help
-d delete cache files
Examples:
mkc_check_funclib dlopen dl
mkc_check_funclib dlopen
mkc_check_funclib strlcpy
mkc_check_funclib select socket
EOF
}
if test $# -eq 0; then
usage
exit 1
fi
if test "_$1" = '_-h'; then
usage
exit 0
fi
if test "_$1" = '_-d'; then
delcache=1
shift
fi
##################################################
# initializing
pathpart=funclib_`echo $* | tr '/. ' ___`
funcname=$1
shift
. ${CHECK_COMMON_SH_DIR}/mkc_check_common.sh
for i in "$@"; do
LDADD="$LDADD -l$i"
libs_msg="$libs_msg -l$i"
done
if test -n "$libs_msg"; then
libs_msg=" ($libs_msg )"
fi
##################################################
# test
check_itself (){
# preparations
fname="$funcname"
cat > "$tmpc" <<EOF
void yylex ();
void yylex () {}
int $fname (int, char **);
int main(int argc, char **argv)
{
if (argc && argv) return 0;
return $fname(0, (char*)0);
}
EOF
# test itself
if $CC -o "$tmpexe" "$tmpc" $LDFLAGS $LDADD 2>"$tmperr"; then
echo 1
else
# SunPro may leave object files in current directory.
# We need not this garbage. Also we cannot use smart shell
# expansions because of crappy Solaris' /bin/sh.
tmpbase=`basename "$tmpc" | sed 's/[.][^.]*$//'`
rm -f ${tmpbase}.o
echo 0
fi
}
check_and_cache "checking for function implementation ${funcname}${libs_msg}" "$cache" "$@"
##################################################
# clean-ups
cleanup
##################################################
# finishing
if test "$ret" -eq 1; then
printme 'yes\n' 1>&2
else
printme 'no\n' 1>&2
fi
echo $ret
|
